15 WordPress Security Best Practices for Australian Small Businesses 2026

The internet is a dangerous place. Tech giants like Facebook and Google come under attack and get hacked constantly, but thousands of small businesses fall prey every single day as well. That's because small business websites are often an easy target — especially when they are running open-source software like WordPress. There are over 90,000 attacks happening every minute on WordPress sites.

Many business owners believe their site is too small to be a target, but the reality is that most attacks are automated. Bots scan the internet for vulnerable websites, regardless of their size or traffic. This guide gives you 15 security best practices for Australian small businesses. Implement these and you will significantly reduce your risk and protect your valuable online asset.

Your WordPress Security Checklist

#	Security Practice	Priority	Cost
1	Keep everything updated	Critical	Free to $100/month
2	Use strong passwords and 2FA	High	Free
3	Choose reliable hosting	High	$100/month
4	Back up your site regularly	High	$100/year
5	Install a security plugin	High	$300/year
6	Secure your login page	Medium	Free
7	Enable a firewall (WAF)	Medium	$300/year
8	Limit user roles and permissions	Medium	Free
9	Use an SSL certificate	Medium	Free
10	Scan and monitor regularly	Medium	$200/year
11	Remove unused plugins and themes	Low	Free
12	Disable XML-RPC	Low	Free
13	Hide your WordPress version	Low	Free
14	Use a CDN	Low	$0–$50/month
15	Implement security headers	Low	Free

The 15 Best Practices Explained

1. Keep Everything Updated

Keeping your WordPress core, themes, and plugins updated is the single most important thing you can do for your site's security. The majority of successful hacks exploit known vulnerabilities in outdated software. Developers release updates specifically to patch these security holes. Failing to update is like leaving your front door unlocked.

2. Use Strong Passwords and Two-Factor Authentication (2FA)

Weak passwords are one of the most common entry points for hackers. Use a unique, complex password for your WordPress admin account, your hosting account, and your database. Enable Two-Factor Authentication (2FA) on your WordPress login to add an extra layer of security.

3. Choose Reliable, Security-Focused Hosting

Your hosting provider is the foundation of your website's security. A good host will offer server-level firewalls, malware scanning, DDoS protection, and regular backups. For Australian businesses, choose a host with local servers in Sydney or Melbourne.

4. Back Up Your Site Regularly

No security measure is 100% foolproof. Regular backups are your safety net. If your site is hacked or something goes wrong, a recent backup means you can restore your site quickly and minimise downtime. Store backups off-site, separate from your hosting environment.

5. Install a Reputable Security Plugin

A dedicated WordPress security plugin acts as a comprehensive security suite for your website. Top options include Wordfence, Sucuri Security, and iThemes Security. These plugins provide features like malware scanning, firewall protection, login security, and real-time threat monitoring.

6. Secure Your Login Page

The WordPress login page (wp-login.php) is a primary target for brute force attacks. Protect it by limiting login attempts, changing the default login URL, and blocking access from suspicious IP addresses.

7. Enable a Web Application Firewall (WAF)

A WAF filters and monitors HTTP traffic between your website and the internet. It blocks malicious traffic before it even reaches your server, protecting against common attacks like SQL injection and cross-site scripting (XSS).

8. Limit User Roles and Permissions

Apply the principle of least privilege. Only give users the level of access they need to do their job. Avoid giving everyone administrator access. Regularly audit your user list and remove accounts that are no longer needed.

9. Use an SSL Certificate

An SSL certificate encrypts the data transmitted between your website and your visitors' browsers. It is essential for protecting sensitive information like login credentials and payment details. Most reputable hosts offer free SSL certificates via Let's Encrypt.

10. Scan and Monitor Your Site Regularly

Regular security scans can detect malware, suspicious files, and vulnerabilities before they cause serious damage. Use your security plugin to schedule automated scans and set up alerts for any suspicious activity.

11. Remove Unused Plugins and Themes

Every plugin and theme you have installed is a potential entry point for attackers, even if it's deactivated. Delete any plugins or themes you are not actively using. Fewer plugins means a smaller attack surface.

12. Disable XML-RPC

XML-RPC is a WordPress feature that allows remote connections to your site. While it has legitimate uses, it is frequently exploited by hackers to perform brute force attacks. Unless you specifically need it, disable it.

13. Hide Your WordPress Version

By default, WordPress publicly displays the version number in your site's source code. Hackers can use this information to target known vulnerabilities in specific versions. Remove this information from your theme's functions.php file or use a security plugin.

14. Use a Content Delivery Network (CDN)

A CDN distributes your website's content across a global network of servers, improving load times for visitors. Many CDNs also offer built-in security features like DDoS protection and bot filtering, adding an extra layer of defence.

15. Implement Security Headers

HTTP security headers are a set of response headers that instruct browsers on how to behave when handling your website's content. They can prevent a range of attacks, including cross-site scripting (XSS) and clickjacking. Configure them via your .htaccess file or a security plugin.